Determination and discussion of the spectral classes of 700 stars mostly near the north pole

Gerrit Hendrik ten Bruggen Cate

    Research output: ThesisThesis fully internal (DIV)

    190 Downloads (Pure)
    Original languageEnglish
    QualificationDoctor of Philosophy
    Award date24-Jun-1920
    Place of PublicationGroningen
    Publisher
    Publication statusPublished - 1920

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